PLEASANTON -- An at-risk Pleasanton woman who went missing was found in Southern California by police Friday.

Diane Taylor, 20, apparently decided to take a bus to Los Angeles on the spur of the moment and didn't let anyone know of her whereabouts, Pleasanton Lt. Jim Knox said. Taylor went missing after being seen around 5 a.m. Thursday morning at the Starbucks on Santa Rita Road.

Taylor is on required medication and was not taking it at the time of her disappearance, police said.